Gravitational perturbations on local experiments in a satellite : The dragging of inertial frame in the HYPER project

Details Gravitational perturbations on local experiments in a satellite : The dragging of inertial frame in the HYPER project Gravitational perturbations on local experiments in a satellite : The dragging of inertial frame in the HYPER project

2003-10-03

arxiv.org/abs/gr-qc/0310021v1

Gen.Rel.Grav. 36 (2004) 411-434

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Accepted in GRG (vol 36, Feb 2004)

Scientific paper

10.1023/B:GERG.0000010485.62147.

We consider a nearly free falling Earth satellite where atomic wave interferometers are tied to a telescope pointing towards a faraway star. They measure the acceleration and the rotation relatively to the local inertial frame. We calculate the rotation of the telescope due to the aberrations and the deflection of the light in the gravitational field of the Earth. We show that the deflection due to the quadrupolar momentum of the gravity is not negligible if one wants to observe the Lense-Thirring effect of the Earth. We consider some perturbation to the ideal device and we discuss the orders of magnitude of the phase shifts due to the residual tidal gravitational field in the satellite and we exhibit the terms which must be taken into account to calculate and interpret the full signal. Within the framework of a geometric model, we calculate the various periodic components of the signal which must be analyzed to detect the Lense-Tirring effect. We discuss the results which support a reasonable optimism. As a conclusion we put forward the necessity of a more complete, realistic and powerful model in order to obtain a final conclusion on the theoretical feasibility of the experiment as far as the observation of the Lense-Thirring effect is involved.

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